Anne V: I’m pregnant!

Anne ‘Anne V’ Vyalitsyna is pregnant for the first time.

The Russian-American supermodel turns 29 years old on Thursday March 19.

And while celebrating her new age, Anne V took to Twitter to announce she and boyfriend Adam Cahan are expecting their first child together.

“On this birthday I couldn't feel luckier, happier & more grateful. @Adamcahan & I couldn't be more excited for you!” she posted on the micro-blogging site, attaching the tweet to an ultrasound image of their unborn child.

Anne V and software executive Adam, who is the head of mobile products at Yahoo, have kept their relationship largely under wraps. The couple have never been photographed at any public events together.

And Anne V, who dated Maroon 5 singer Adam Levine for around three years before they split in 2013, has previously spoken about why she hates having her romantic relationships in the spotlight.

"Honestly, it sucks, but it is what it is," she told Ocean Drive magazine of dating a celebrity. "People don’t really realise that at the end of the day, we all want to be loved. We all want to have normal families and relationships and kids. No one wants to get divorced and have someone create stupid dramas and articles about your relationship."

Anne, who is well known for her appearances in the Sports Illustrated Swimsuit Issue between 2005 and 2014, was most recently romantically linked to New York Mets baseball pitcher Matt Harvey. But she split from the athlete in February 2014.